Descriptive features of patients with hypersensitivity pneumonitis (HP) and DPLD and comparative statistics; values are mean (SD)
| HP (n = 4) | DPLD (n = 39) | p Value | |
|---|---|---|---|
| FEV1, forced expiratory volume in one second; FVC, forced vital capacity; FEV1/FVC, ratio of FEV1 to FVC; DLCO, diffusion capacity of the lung for carbon monoxide; DLCO/VA, DLCO adjusted for alveolar volume; Po2, partial oxygen pressure; NS, not significant. | |||
| Age (years) | 44.25 (10.6) | 49.20 (14.7) | NS |
| Gender (M/F) | 20/19 | 2/2 | NS |
| Symptom duration (months) | 3.25 (1.5) | 22.19 (29.8) | NS |
| Smoking status (pack-year) | 7.50 (15.0) | 13.84 (23.5) | NS |
| Haemoglobin (g/l) | 140.5 (10.0) | 142.2 (17.0) | NS |
| Leucocytes (×109/l) | 7.02 (1.6) | 8.28 (3.6) | NS |
| Eosinophils (×109/l) | 0.12 (0.05) | 0.24 (0.2) | NS |
| Erythrocyte sedimentation rate (hours) | 16.5 (7.2 | 35.15 (25.8) | NS |
| FEV1 (%) | 103.50 (11.7) | 71.79 (20.0) | <0.05 |
| FVC (%) | 100.75 (15.5) | 75.14 (22.7) | <0.05 |
| FEV1/FVC | 86.25 (3.4) | 81.38 (11.9) | NS |
| DLCO (%) | 67.75 (24.1) | 56.61 (23.3) | NS |
| DLCO/VA (%) | 73.50 (16.2) | 94.03 (29.9) | NS |
| Po2 (kPa) | 10.9 (1.7) | 8.4 (2.1) | NS |